– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 10 am Tue 22 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Tue 22 Sep Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryModerate rain (total 16mm), heaviest on Thu night. Very mild (max 17°C on Thu afternoon, min 10°C on Tue night). Wind will be generally light. | Days 4–6 Weather SummaryHeavy rain (total 22mm), heaviest during Fri morning. Very mild (max 16°C on Sun afternoon, min 7°C on Fri night). Wind will be generally light. | |||||||||||||||||
Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | Sunday 27 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  | | |  |  | | | |  |  | | |  | |
clear | rain shwrs | some clouds | cloudy | light rain | rain shwrs | cloudy | light rain | heavy rain | heavy rain | rain shwrs | rain shwrs | rain shwrs | some clouds | cloudy | cloudy | some clouds | clear | |
Cloud base (m) | 700 | 1850 | 1900 | 2400 | 1950 | 7000 | 3250 | 1900 | 550 | 550 | 650 | 650 | 800 | 6100 | 3100 | 3100 | 9100 | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | 0.1 | — | — | 0.3 | 0.1 | — | 1.8 | 14 | 13 | 6 | 3 | 0.2 | — | — | — | — | — |
max °C | 14 | 16 | 12 | 13 | 14 | 11 | 15 | 17 | 11 | 10 | 9 | 8 | 10 | 13 | 11 | 14 | 16 | 11 |
min °C | 11 | 15 | 10 | 10 | 14 | 10 | 12 | 11 | 10 | 8 | 8 | 7 | 7 | 13 | 11 | 12 | 15 | 9 |
chill °C | 11 | 15 | 10 | 10 | 14 | 10 | 12 | 11 | 10 | 6 | 7 | 6 | 7 | 13 | 11 | 12 | 15 | 9 |
Freezing level m | 2900 | 2700 | 2450 | 2350 | 2500 | 3100 | 2850 | 2750 | 2350 | 1800 | 1700 | 1700 | 1850 | 2550 | 2950 | 2650 | 2550 | 2500 |
 | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — | 7:01 | — | — |
 | — | 7:06 | — | — | 7:04 | — | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — | 6:54 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Moderate rain (total 16mm), heaviest on Thu night. Very mild (max 17°C on Thu afternoon, min 10°C on Tue night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Heavy rain (total 22mm), heaviest during Fri morning. Very mild (max 16°C on Sun afternoon, min 7°C on Fri night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.